Leases - Supplemental Balance Sheet Information (Details) $ in Millions	Dec. 31, 2019 USD ($)
Assets
Operating right-of-use assets	$ 112.6
Liabilities
Current lease liabilities	24.0
Long-term lease liabilities	91.5
Total lease liabilities	$ 115.5
Weighted average remaining lease term (in years):
Weighted-average remaining lease term - operating leases	9 years 8 months 12 days
Weighted average discount rate:
Weighted-average discount rate - operating leases	3.90%